thats probably the stupidest post ive read in a while.
of course you have an advantage if you tp in for a 4v2 with the jungler on bot lane, even when you dont have heal, barrier or ignite. ganks like that and map control are the main purpose of the summoner. youre not tping in on someone for a 1v1.
technically supports could run tp just as easily to get 3 man ganks off on top lane. but there is no larger objective up there in the early game, so it wouldnt make much sense from a strategic point. you may have killed that guy, but now you have 1 guy on bot vs 2. the enemy jungler comes down for a 3v1, kills him and they take drake.
adc are not supposed to 1v1 anyone everyone anyways. theyre still the class with the most champion damage, and take objectives faster than anyone else. your usual bruiser will not be able to siege turrets as safely and take drakes and barons as fast as an adc.
adc arent supposed to be good at everything. they have a specific purpose of pushing an advantage when your team wins a skirmish or larger fight.